BluegrassJimmie:
God does not require us to be any specific church affiliation. We are required to:
- Recognize our sin
- Realize that our sin keeps us from God.
- Recognize our need for atonement to become blameless again in God’s eyes.
- Repent of our sin
- Have FAITH in Christ’s completed work which is sufficient for the forgiveness of all sins.
Then we:
- Are regenerated, or born again, as a new creation in Christ.
- Are progressively sanctified (made more like Christ) through the indwelling of the Holy Spirit.
- Live out our faith by our works for God.
However, the Church is a Divinely ordained means of salvation, built up by Christ Himself (not by mere man - man cannot found the Church: this is an act so far beyond the power of man, or of any creature, that God alone can do it. It is nothing less than an act of God the Creator)
If we wish to be “obedient children”, we cannot be solo Christians.

At least in some sense, the Church is necessary for salvation - and since Christ is the Saviour, and we are the beneficiaries of His saving act, we do not get to choose how we are saved; He tells us how we are saved. And though the Church is not the whole of our salvation - for Christ is her Founder and Shepherd, her Lord and her Redeemer and her Sovereign, to whom she is for ever subject in love - she is nonetheless of very great importance in our salvation.
Christ Himself commends His Church to us - for when Saul persecuted the Church, He was really persecuting Christ. It was Christ whom He wounded, imprisoned, harrassed, planned to persecute, and it was against Christ that he “breathed threats and slaughter” (Acts 9).
Once he had been converted, it was he who wrote that “Christ loved the Church, and gave Himself for her…”; and He shows this Love by providing for His Church, as when He gave her apostles, prophets, teachers, presbyters, bishops, and so on. The unfailing goodness of Christ to His Church shows both the greatness of His Love for her, and, by inference, her importance in His plans: for He is even kinder to her than He was to Israel - and that is saying an awful lot. If she were not very important to Him, why so much care and such unceasing kindness and Love for her ? Besides, “no man ever hated his own body” - and Christ does not hate His. That is, He is no way hates His Church, but rescues her from every evil, even when she is bveing passive aggressive and is being her own worst enemy.
To say these things of the Church is not praising our work. Nebuchadnezzar does that in Daniel 4 - “Is not this Babylon the great, which I have built ?”. To insist on the importance and the graces of the Church, “all glorious within”, is to praise Him alone Whose Body and Whose building she is - for that not our work, but God’s. All her excellencies and splendours are from Christ, and from no other source. ##